Question

The coordinates of the center are (0,4) and the radius is 5.

Write an equation to solve the circle in standard form.

Answer 1

x² + (y - 4)² = 25

Explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

here (h, k) = (0, 4) and r = 5, hence

x² + (y - 4)² = 25 ← in standard form